Add missing rules.mk files.

For the diplomat and diplomat_core crates.

This was probably the result of not running "git add" after changing
cargo_embargo.json and running `crate_tool regenerate`. Unfortunately,
the AyeAye analyzer isn't able to detect missing files like this. The
pre-upload check could detect this, but currently fails to. This is a
bug.

Test: ./crate_tool regenerate diplomat diplomat_core
Change-Id: I1df96ee5e671ee650262da38b6fc6c027bb457fe
diff --git a/crates/diplomat/rules.mk b/crates/diplomat/rules.mk
new file mode 100644
index 0000000..887729a
--- /dev/null
+++ b/crates/diplomat/rules.mk
@@ -0,0 +1,18 @@
+# This file is generated by cargo_embargo.
+# Do not modify this file after the LOCAL_DIR line
+# because the changes will be overridden on upgrade.
+# Content before the first line starting with LOCAL_DIR is preserved.
+
+LOCAL_DIR := $(GET_LOCAL_DIR)
+MODULE := $(LOCAL_DIR)
+MODULE_CRATE_NAME := diplomat
+MODULE_RUST_CRATE_TYPES := proc-macro
+MODULE_SRCS := $(LOCAL_DIR)/src/lib.rs
+MODULE_RUST_EDITION := 2021
+MODULE_LIBRARY_DEPS := \
+	$(call FIND_CRATE,diplomat_core) \
+	$(call FIND_CRATE,proc-macro2) \
+	$(call FIND_CRATE,quote) \
+	$(call FIND_CRATE,syn)
+
+include make/library.mk
diff --git a/crates/diplomat_core/rules.mk b/crates/diplomat_core/rules.mk
new file mode 100644
index 0000000..596cdc9
--- /dev/null
+++ b/crates/diplomat_core/rules.mk
@@ -0,0 +1,20 @@
+# This file is generated by cargo_embargo.
+# Do not modify this file after the LOCAL_DIR line
+# because the changes will be overridden on upgrade.
+# Content before the first line starting with LOCAL_DIR is preserved.
+
+LOCAL_DIR := $(GET_LOCAL_DIR)
+MODULE := $(LOCAL_DIR)
+MODULE_CRATE_NAME := diplomat_core
+MODULE_RUST_CRATE_TYPES := rlib
+MODULE_SRCS := $(LOCAL_DIR)/src/lib.rs
+MODULE_RUST_EDITION := 2021
+MODULE_LIBRARY_DEPS := \
+	$(call FIND_CRATE,proc-macro2) \
+	$(call FIND_CRATE,quote) \
+	$(call FIND_CRATE,serde) \
+	$(call FIND_CRATE,smallvec) \
+	$(call FIND_CRATE,strck) \
+	$(call FIND_CRATE,syn)
+
+include make/library.mk